The Diameter of a chlorine atom is 200. Pm. How many chlorine atoms are required to line up end to end to stretch a distance of 1.0mm? Use 'E' for scientific notation.

Based on Gay-Lussac's law, which of the following statements is true for an ideal gas at constant volume and mole amount? A. The number of collisions is independent of pressure. B. The number of collisions decreases with increase in pressure. C.

Consider the following balanced reaction between hydrogen and nitrogen to form ammonia: 3H2 (g) + N2 (g) →2NH3 (g) How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2?

Potassium hydroxide (KOH) is a strong base because it A. easily releases hydroxide ions. B. does not dissolve in water. c. reacts to form salt crystals in water. D. does not conduct an electric current.

Gasoline is a mixture composed primarily of hydrocarbons such as isooctane, which is also known as 2,2,4-trimethylpentane. Gasoline is assigned a number called an octane rating.

What is the scientific tool required to measure the volume of a liquid?

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.

How are the number of protons and the number of neutrons related?

If a sample of copper with a density of 8.90 g/cm3 displaces 13.0 mL of water when placed in a beaker, what is its mass? a 1.46 g b. 0.685 g c. 116 g

Which statement accurately describes the origin and expansion of the universe